4.4: Alternate routing and diverse Routing (Doshi)

Question 1

Alternate Routing:

Answer 1

Alternative routing is the method of routing information via an alternative medium, such as copper cable or fiber optics

Question 2

Two types of alternate routing

Answer 2

Last mile circuit protection and long haul network diversity.

Question 3

Last mile circuit protection:

Answer 3

Last mile circuit protection provides redundancy for local communication loop.

Question 4

Long haul network diversity:

Answer 4

Long haul network diversity provides redundancy for long distance availability.

Question 5

Diverse Routing:

Answer 5

Diverse routing is the method of routing traffic through split-cable facilities or duplicate cable facilities

Question 6

Difference between alternate routing and diverse routing:

Answer 6

Diverse is routing traffic through split-cables facilities or duplicate facilities Whereas the method of routing information via an alternative medium, such as copper cable or fiber optics is called alternate routing.

Question 7

An organization is routing traffic through split -cable or duplicate-cable facilities. This arrangement is called:

A. Diverse routing
B. Alternate routing
C. Gateway
D.Bridge

Answer 7

A. Diverse routing

The method of routing traffic through split-cable facilities or duplicate-cable facilities is called diverse routing. Alternative routing is the method of routing information via an alternative medium, such as copper cable or fiber optics. Gateway and Bridge is used for network extension.

Question 8

Use of redundant combinations (local carrier lines, microwaves and/or coaxial cables) to access local communication loop is known as:

A.last-mile circuit protection
B.long-haul network diversity
C.diverse routing
D.alternative routing

Answer 8

A.last-mile circuit protection

Use of redundant combinations (local carrier lines, microwaves and/or coaxial cables) to access local communication loop is known as last mile circuit protection. The method of providing telecommunication continuity through the use of redundant combinations to access the local communication loop in the event of a disaster is called last-mile circuit protection. Long haul
network diversity ensures long distance availability. The method of routing traffic through split cable facilities or duplicate cable facilities is called diverse routing. Alternative routing is the method of routing information via an alternative medium such as copper cable or fiber optics.

Question 9

Method of routing information via an alternative medium, such as copper cable or fiber optics is called:

A. Diverse routing
B. Alternate routing
C. Gateway
D.Bridge

Answer 9

B. Alternate routing

Alternative routing is the method of routing information via an alternative medium, such as copper cable or fiber optics. The method of routing traffic through split-cable facilities or duplicate-cable facilities is called diverse routing. Gateway and Bridge is used for network extension.

Question 10

In any given situation, fiber-optic cables have proven to be more

Answer 10

secure than the other media. They have very low transmission loss, not affected by EMI and preferred choice for high volumes and long distance calls.

Question 11

When CISA question is about transmission error that can occur in wired as well as wireless communication, our answer should be

Answer 11

attenuation.

Question 12

It is essential to understand the difference between diverse routing and alternate routing.

Answer 12

The method of routing traffic through split-cable facilities or duplicate-cable facilities is called diverse routing. Whereas the method of routing information via an alternative medium, such as copper cable or fiber optics is called alternate routing.

Question 13

Also, CISA aspirant should be able to differentiate between last mile and long haul.

Answer 13

Last mile provide redundancy for local loop whereas long haul provide redundancy for long distance availability.

Question 14

It is also very critical to understand the meaning of terms such as attenuation, EMI and cross talks:

Answer 14

(i) Attenuation:
- Attenuation is the weakening of signals during transmission.
- Attenuation exists in both wired and wireless transmissions.
- Length of wire impacts the severity of attenuation.
(ii) Electromagnetic Interference (EMI):
- EMI is a disturbance generated by an external source that affects an electrical circuit.
- The disturbance may degrade the performance of the circuit or even stop it from functioning. In the case of a data path, these effects can range from an increase in error rate to a total loss of the data.
- EMI is caused by electrical storms or noisy electrical equipments (e.g. motors, fluorescent lighting, radio transmitters etc.)
(iii) Cross-Talks:

Crosstalk is electromagnetic interference from one unshielded twisted pair to another twisted pair, normally running in parallel.